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While the true need for the bridge is disputed, it is undeniably an extraordinary feat of engineering.Built to withstand a magnitude eight earthquake, a super typhoon, and strikes by super-sized cargo vessels, it incorporates 400,000 tons of steel -- 4.5 times the amount in San Francisco's Golden Gate Bridge.Guo says the most technically difficult aspect was the construction of a four mile (6.7 kilometer) long submerged tunnel.The tunnel is a crucial component because the Pearl River Delta is one of the busiest shipping areas in the world. According to the Hong Kong-Zhuhai-Macao Bridge Authority over 4,000 vessels -- everything from passenger ferries to container ships -- cruise its waters every day.Guo explains that the tunnel is made of 33 "elements" -- huge hollow blocks measuring 590 feet (180 meters) long, 125 feet (38 meters) wide and 37 feet (11.4 meters) high. Each element weighs 80,000 tons -- about the same as an aircraft carrier. The elements were precast on Guishan Island, near Zhuhai, and transported to the construction site by floating pontoons and tugboats. "We excavated a foundation trench in the sea bed, laid a rock bed, then immersed the elements," he says.The tunnel runs between two artificial islands, each measuring one million square feet (100,000 square meters) and situated in relatively shallow waters. Building islands from scratch didn't prove easy, either, says Xinglin. A structural frame was created using 120 giant, hollow, steel cylinders, each one 180 feet (55 meters) high (equivalent to an 18-story building) and weighing 550 tons -- about the same as an Airbus A380, the world's largest passenger jet."The steel structures were manufactured in a workshop in Shanghai and then transported to the site by ship," Guo tells CNN. The team used hydraulic hammers to drive the cylinders into the seabed, then filled the cylinders and the enclosed area with sand. 1915

Winter WonderlandWhere: Fairmont Grand Del Mar; Cost: (Thursday - Sunday) Take a ride down a giant snow hill, enjoy a holiday Ferris Wheel ride, take in the sounds of caroling, and get a little holiday shopping done at the Fairmont Grand Del Mar during their Winter Wonderland celebration! 292

While Zéa was still sedated, her parents had to make a choice within 15 minutes: major surgery to remove the tumor or begin chemotherapy immediately. 149

Winslow was convicted of raping a 58-year-old homeless woman -- Jane Doe 2 -- last May, exposing himself later that month to Jane Doe 3, who was gardening in her front yard in Cardiff, and touching himself in front of a 77-year-old woman -- Jane Doe 5 -- at a Carlsbad gym in February. 286

Wooten said it's too early to tell if the restaurant case is linked to the current hepatitis A outbreak, which has sickened 421 people in the region since November, 16 of them fatally. Around two-thirds of those who have fallen ill in the outbreak were homeless and/or users of illicit drugs, she said. 302